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authorAntonino A. Daplas <adaplas@gmail.com>2006-10-03 12:14:49 +0400
committerLinus Torvalds <torvalds@g5.osdl.org>2006-10-03 19:04:10 +0400
commit928e964f262b522dad57483108f62d87c52ccf82 (patch)
tree45c32e384474f8f6d8c9f9f8f142a191ec5dbb7e /drivers/char/vt.c
parent212f26398f63bc905ea28f55b31d4ecd4a21a33b (diff)
downloadlinux-928e964f262b522dad57483108f62d87c52ccf82.tar.xz
[PATCH] vt: Honor the return value of device_create_file
Check the return value of device_create_file(). If return is 'fail', remove attributes by calling device_remove_file(). Signed-off-by: Antonino Daplas <adaplas@pol.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/char/vt.c')
-rw-r--r--drivers/char/vt.c31
1 files changed, 24 insertions, 7 deletions
diff --git a/drivers/char/vt.c b/drivers/char/vt.c
index ec0c070bf15f..a398b6b6aa65 100644
--- a/drivers/char/vt.c
+++ b/drivers/char/vt.c
@@ -106,7 +106,8 @@
#define MAX_NR_CON_DRIVER 16
#define CON_DRIVER_FLAG_MODULE 1
-#define CON_DRIVER_FLAG_INIT 2
+#define CON_DRIVER_FLAG_INIT 2
+#define CON_DRIVER_FLAG_ATTR 4
struct con_driver {
const struct consw *con;
@@ -3070,22 +3071,37 @@ static struct class_device_attribute class_device_attrs[] = {
static int vtconsole_init_class_device(struct con_driver *con)
{
int i;
+ int error = 0;
+ con->flag |= CON_DRIVER_FLAG_ATTR;
class_set_devdata(con->class_dev, con);
- for (i = 0; i < ARRAY_SIZE(class_device_attrs); i++)
- class_device_create_file(con->class_dev,
+ for (i = 0; i < ARRAY_SIZE(class_device_attrs); i++) {
+ error = class_device_create_file(con->class_dev,
&class_device_attrs[i]);
+ if (error)
+ break;
+ }
- return 0;
+ if (error) {
+ while (--i >= 0)
+ class_device_remove_file(con->class_dev,
+ &class_device_attrs[i]);
+ con->flag &= ~CON_DRIVER_FLAG_ATTR;
+ }
+
+ return error;
}
static void vtconsole_deinit_class_device(struct con_driver *con)
{
int i;
- for (i = 0; i < ARRAY_SIZE(class_device_attrs); i++)
- class_device_remove_file(con->class_dev,
- &class_device_attrs[i]);
+ if (con->flag & CON_DRIVER_FLAG_ATTR) {
+ for (i = 0; i < ARRAY_SIZE(class_device_attrs); i++)
+ class_device_remove_file(con->class_dev,
+ &class_device_attrs[i]);
+ con->flag &= ~CON_DRIVER_FLAG_ATTR;
+ }
}
/**
@@ -3184,6 +3200,7 @@ int register_con_driver(const struct consw *csw, int first, int last)
} else {
vtconsole_init_class_device(con_driver);
}
+
err:
release_console_sem();
module_put(owner);